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Finding the Fourth Proportional to 507,489.52, 759,130.44 and 386,632

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Solution

The fourth proportional to 507,489.52, 759,130.44 and 386,632 is: 578,345.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,489.52 : 759,130.44 = 386,632 : x
  2. Step 2: Convert to fraction form
    507,489.52/759,130.44 = 386,632/x
  3. Step 3: Cross multiply
    507,489.52x = 759,130.44 × 386,632
  4. Step 4: Simplify right side
    507,489.52x = 293,504,120,278.08
  5. Step 5: Solve for x
    x = 293,504,120,278.08/507,489.52
  6. Step 6: Final answer
    x = 578,345.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.